Can Copenhagen Save Yosemite?

Photo courtesy the US Bureau of Land Management

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Climate change is forecast to burn Yosemite National Park violently in coming years. A new study in the International Journal of Wildland Fire finds the dwindling spring snowpack in the Sierra Nevada will exponentially increase the number of lightning-ignited fires.

The increase has two causes:

  • Increasing levels of carbon dioxide in the atmosphere appear to be leading to more lightning strikes.
  • Decreasing winter snowpack—conservative climate models predict a 17-percent fall by 2050—will allow more lightning strikes  to ignite fires in the park.

The BBC quotes lead author James Lutz of the U of Washington Seattle:

“People already expect more ignitions from hotter summers. But this research suggests that declines in snowpack will have an additional effect.”

In other words, a warming climate is setting up a nasty positive feedback loop, making a bad situation worse.

Come on, world leaders, lead already.

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DEMOCRACY DOES NOT EXIST...

without free and fair elections, a vigorous free press, and engaged citizens to reclaim power from those who abuse it.

In this election year unlike any other—against a backdrop of a pandemic, an economic crisis, racial reckoning, and so much daily crazy—Mother Jones' journalism is driven by one simple question: Will America move closer to, or further from, justice and equity in the years to come?

If you're able to, please join us in this mission with a donation today. Our reporting right now is focused on voting rights and election security, corruption, disinformation, racial and gender equity, and the climate crisis. We can’t do it without the support of readers like you, and we need to give it everything we've got between now and November. Thank you.

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